ACKNOWLEDGEMENTS
We are grateful to our collaborators for providing the samples used in this study, particularly Nancy Carrejo (Universidad del Valle, Colombia) and Mónica Hernández (Instituto de Ecología, A.C, Mexico). We also thank Daniel Whitmore for his assistance with the BMNH collection and to Vanina Tonzo for her feedback and support in SNAPP and ABC model analyses. Finally, we acknowledge Dr Cristina Díez-Vives and thank her for her advice on the microbiome pipeline. MBA was supported by the National Agency for Research and Development (ANID), fellowship program Doctorado en el extranjero/2014 and Postdoctorado en el extranjero/2019 - 74200143. SE was supported by an EMBO grant (ASTF-42-2010) and a CSIRO Julius Career Award (R- 91040-11). ST received funding from the grant PID2020-117115GA-100 funded by MCIN/AEI/ 10.13039/50110001103.